From b5f3e1e153b60f7bc338cdd6eefacd59c2dfb375 Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Sun, 2 Dec 2007 16:36:05 -0300 Subject: [PATCH] V4L/DVB (6727): tda18271: convert table lookup loops to functions Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/tda18271-fe.c | 119 ++++-------------- drivers/media/dvb/frontends/tda18271-priv.h | 46 ++++--- drivers/media/dvb/frontends/tda18271-tables.c | 106 ++++++++++++++-- 3 files changed, 149 insertions(+), 122 deletions(-) diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c index fee38c1657e..5d3c4b0975f 100644 --- a/drivers/media/dvb/frontends/tda18271-fe.c +++ b/drivers/media/dvb/frontends/tda18271-fe.c @@ -25,22 +25,10 @@ #include "tda18271.h" #include "tda18271-priv.h" -static int tda18271_debug; +int tda18271_debug; module_param_named(debug, tda18271_debug, int, 0644); MODULE_PARM_DESC(debug, "set debug level (info=1, map=2, reg=4 (or-able))"); -#define dprintk(level, fmt, arg...) do {\ - if (tda18271_debug & level) \ - printk(KERN_DEBUG "%s: " fmt, __FUNCTION__, ##arg); } while (0) - -#define DBG_INFO 1 -#define DBG_MAP 2 -#define DBG_REG 4 - -#define dbg_info(fmt, arg...) dprintk(DBG_INFO, fmt, ##arg) -#define dbg_map(fmt, arg...) dprintk(DBG_MAP, fmt, ##arg) -#define dbg_reg(fmt, arg...) dprintk(DBG_REG, fmt, ##arg) - /*---------------------------------------------------------------------*/ #define TDA18271_ANALOG 0 @@ -365,7 +353,7 @@ static int tda18271_tune(struct dvb_frontend *fe, struct tda18271_priv *priv = fe->tuner_priv; unsigned char *regs = priv->tda18271_regs; u32 div, N = 0; - int i; + u8 d, pd, val; tda18271_init(fe); @@ -374,16 +362,10 @@ static int tda18271_tune(struct dvb_frontend *fe, /* RF tracking filter calibration */ /* calculate BP_Filter */ - i = 0; - while ((tda18271_bp_filter[i].rfmax * 1000) < freq) { - if (tda18271_bp_filter[i + 1].rfmax == 0) - break; - i++; - } - dbg_map("bp filter = 0x%x, i = %d\n", tda18271_bp_filter[i].val, i); + tda18271_calc_bp_filter(&freq, &val); regs[R_EP1] &= ~0x07; /* clear bp filter bits */ - regs[R_EP1] |= tda18271_bp_filter[i].val; + regs[R_EP1] |= val; tda18271_write_regs(fe, R_EP1, 1); regs[R_EB4] &= 0x07; @@ -413,18 +395,11 @@ static int tda18271_tune(struct dvb_frontend *fe, break; } - i = 0; - while ((tda18271_cal_pll[i].lomax * 1000) < N) { - if (tda18271_cal_pll[i + 1].lomax == 0) - break; - i++; - } - dbg_map("cal pll, pd = 0x%x, d = 0x%x, i = %d\n", - tda18271_cal_pll[i].pd, tda18271_cal_pll[i].d, i); + tda18271_calc_cal_pll(&N, &pd, &d); - regs[R_CPD] = tda18271_cal_pll[i].pd; + regs[R_CPD] = pd; - div = ((tda18271_cal_pll[i].d * (N / 1000)) << 7) / 125; + div = ((d * (N / 1000)) << 7) / 125; regs[R_CD1] = 0xff & (div >> 16); regs[R_CD2] = 0xff & (div >> 8); regs[R_CD3] = 0xff & div; @@ -440,16 +415,9 @@ static int tda18271_tune(struct dvb_frontend *fe, break; } - i = 0; - while ((tda18271_main_pll[i].lomax * 1000) < N) { - if (tda18271_main_pll[i + 1].lomax == 0) - break; - i++; - } - dbg_map("main pll, pd = 0x%x, d = 0x%x, i = %d\n", - tda18271_main_pll[i].pd, tda18271_main_pll[i].d, i); + tda18271_calc_main_pll(&N, &pd, &d); - regs[R_MPD] = (0x7f & tda18271_main_pll[i].pd); + regs[R_MPD] = (0x7f & pd); switch (priv->mode) { case TDA18271_ANALOG: @@ -460,7 +428,7 @@ static int tda18271_tune(struct dvb_frontend *fe, break; } - div = ((tda18271_main_pll[i].d * (N / 1000)) << 7) / 125; + div = ((d * (N / 1000)) << 7) / 125; regs[R_MD1] = 0xff & (div >> 16); regs[R_MD2] = 0xff & (div >> 8); regs[R_MD3] = 0xff & div; @@ -469,42 +437,23 @@ static int tda18271_tune(struct dvb_frontend *fe, msleep(5); /* RF tracking filter calibration initialization */ /* search for K,M,CO for RF Calibration */ - i = 0; - while ((tda18271_km[i].rfmax * 1000) < freq) { - if (tda18271_km[i + 1].rfmax == 0) - break; - i++; - } - dbg_map("km = 0x%x, i = %d\n", tda18271_km[i].val, i); + tda18271_calc_km(&freq, &val); regs[R_EB13] &= 0x83; - regs[R_EB13] |= tda18271_km[i].val; + regs[R_EB13] |= val; tda18271_write_regs(fe, R_EB13, 1); /* search for RF_BAND */ - i = 0; - while ((tda18271_rf_band[i].rfmax * 1000) < freq) { - if (tda18271_rf_band[i + 1].rfmax == 0) - break; - i++; - } - dbg_map("rf band = 0x%x, i = %d\n", tda18271_rf_band[i].val, i); + tda18271_calc_rf_band(&freq, &val); regs[R_EP2] &= ~0xe0; /* clear rf band bits */ - regs[R_EP2] |= (tda18271_rf_band[i].val << 5); + regs[R_EP2] |= (val << 5); /* search for Gain_Taper */ - i = 0; - while ((tda18271_gain_taper[i].rfmax * 1000) < freq) { - if (tda18271_gain_taper[i + 1].rfmax == 0) - break; - i++; - } - dbg_map("gain taper = 0x%x, i = %d\n", - tda18271_gain_taper[i].val, i); + tda18271_calc_gain_taper(&freq, &val); regs[R_EP2] &= ~0x1f; /* clear gain taper bits */ - regs[R_EP2] |= tda18271_gain_taper[i].val; + regs[R_EP2] |= val; tda18271_write_regs(fe, R_EP2, 1); tda18271_write_regs(fe, R_EP1, 1); @@ -529,17 +478,11 @@ static int tda18271_tune(struct dvb_frontend *fe, tda18271_write_regs(fe, R_EP1, 1); /* RF tracking filer correction for VHF_Low band */ - i = 0; - while ((tda18271_rf_cal[i].rfmax * 1000) < freq) { - if (tda18271_rf_cal[i].rfmax == 0) - break; - i++; - } - dbg_map("rf cal = 0x%x, i = %d\n", tda18271_rf_cal[i].val, i); + tda18271_calc_rf_cal(&freq, &val); /* VHF_Low band only */ - if (tda18271_rf_cal[i].rfmax != 0) { - regs[R_EB14] = tda18271_rf_cal[i].val; + if (val != 0) { + regs[R_EB14] = val; tda18271_write_regs(fe, R_EB14, 1); } @@ -579,29 +522,17 @@ static int tda18271_tune(struct dvb_frontend *fe, regs[R_EP4] &= ~0x80; /* turn this bit on only for fm */ /* image rejection validity EP5[2:0] */ - i = 0; - while ((tda18271_ir_measure[i].rfmax * 1000) < freq) { - if (tda18271_ir_measure[i].rfmax == 0) - break; - i++; - } - dbg_map("ir measure, i = %d\n", i); + tda18271_calc_ir_measure(&freq, &val); + regs[R_EP5] &= ~0x07; - regs[R_EP5] |= tda18271_ir_measure[i].val; + regs[R_EP5] |= val; /* calculate MAIN PLL */ N = freq + ifc; - i = 0; - while ((tda18271_main_pll[i].lomax * 1000) < N) { - if (tda18271_main_pll[i + 1].lomax == 0) - break; - i++; - } - dbg_map("main pll, pd = 0x%x, d = 0x%x, i = %d\n", - tda18271_main_pll[i].pd, tda18271_main_pll[i].d, i); + tda18271_calc_main_pll(&N, &pd, &d); - regs[R_MPD] = (0x7f & tda18271_main_pll[i].pd); + regs[R_MPD] = (0x7f & pd); switch (priv->mode) { case TDA18271_ANALOG: regs[R_MPD] &= ~0x08; @@ -611,7 +542,7 @@ static int tda18271_tune(struct dvb_frontend *fe, break; } - div = ((tda18271_main_pll[i].d * (N / 1000)) << 7) / 125; + div = ((d * (N / 1000)) << 7) / 125; regs[R_MD1] = 0xff & (div >> 16); regs[R_MD2] = 0xff & (div >> 8); regs[R_MD3] = 0xff & div; diff --git a/drivers/media/dvb/frontends/tda18271-priv.h b/drivers/media/dvb/frontends/tda18271-priv.h index a3158eb2559..d56c2fe3efa 100644 --- a/drivers/media/dvb/frontends/tda18271-priv.h +++ b/drivers/media/dvb/frontends/tda18271-priv.h @@ -21,6 +21,7 @@ #ifndef __TDA18271_PRIV_H__ #define __TDA18271_PRIV_H__ +#include #include #define R_ID 0x00 /* ID byte */ @@ -65,26 +66,31 @@ #define TDA18271_NUM_REGS 39 -struct tda18271_pll_map { - u32 lomax; - u8 pd; /* post div */ - u8 d; /* div */ -}; - -extern struct tda18271_pll_map tda18271_main_pll[]; -extern struct tda18271_pll_map tda18271_cal_pll[]; - -struct tda18271_map { - u32 rfmax; - u8 val; -}; - -extern struct tda18271_map tda18271_bp_filter[]; -extern struct tda18271_map tda18271_km[]; -extern struct tda18271_map tda18271_rf_band[]; -extern struct tda18271_map tda18271_gain_taper[]; -extern struct tda18271_map tda18271_rf_cal[]; -extern struct tda18271_map tda18271_ir_measure[]; +extern int tda18271_debug; + +#define dprintk(level, fmt, arg...) do {\ + if (tda18271_debug & level) \ + printk(KERN_DEBUG "%s: " fmt, __FUNCTION__, ##arg); } while (0) + +#define DBG_INFO 1 +#define DBG_MAP 2 +#define DBG_REG 4 + +#define dbg_info(fmt, arg...) dprintk(DBG_INFO, fmt, ##arg) +#define dbg_map(fmt, arg...) dprintk(DBG_MAP, fmt, ##arg) +#define dbg_reg(fmt, arg...) dprintk(DBG_REG, fmt, ##arg) + +/*---------------------------------------------------------------------*/ + +extern void tda18271_calc_cal_pll(u32 *freq, u8 *post_div, u8 *div); +extern void tda18271_calc_main_pll(u32 *freq, u8 *post_div, u8 *div); + +extern void tda18271_calc_bp_filter(u32 *freq, u8 *val); +extern void tda18271_calc_km(u32 *freq, u8 *val); +extern void tda18271_calc_rf_band(u32 *freq, u8 *val); +extern void tda18271_calc_gain_taper(u32 *freq, u8 *val); +extern void tda18271_calc_rf_cal(u32 *freq, u8 *val); +extern void tda18271_calc_ir_measure(u32 *freq, u8 *val); #endif /* __TDA18271_PRIV_H__ */ diff --git a/drivers/media/dvb/frontends/tda18271-tables.c b/drivers/media/dvb/frontends/tda18271-tables.c index d65d3411e36..65387bb059e 100644 --- a/drivers/media/dvb/frontends/tda18271-tables.c +++ b/drivers/media/dvb/frontends/tda18271-tables.c @@ -20,7 +20,20 @@ #include "tda18271-priv.h" -struct tda18271_pll_map tda18271_main_pll[] = { +struct tda18271_pll_map { + u32 lomax; + u8 pd; /* post div */ + u8 d; /* div */ +}; + +struct tda18271_map { + u32 rfmax; + u8 val; +}; + +/*---------------------------------------------------------------------*/ + +static struct tda18271_pll_map tda18271_main_pll[] = { { .lomax = 32000, .pd = 0x5f, .d = 0xf0 }, { .lomax = 35000, .pd = 0x5e, .d = 0xe0 }, { .lomax = 37000, .pd = 0x5d, .d = 0xd0 }, @@ -64,7 +77,7 @@ struct tda18271_pll_map tda18271_main_pll[] = { { .lomax = 0, .pd = 0x00, .d = 0x00 }, /* end */ }; -struct tda18271_pll_map tda18271_cal_pll[] = { +static struct tda18271_pll_map tda18271_cal_pll[] = { { .lomax = 33000, .pd = 0xdd, .d = 0xd0 }, { .lomax = 36000, .pd = 0xdc, .d = 0xc0 }, { .lomax = 40000, .pd = 0xdb, .d = 0xb0 }, @@ -103,7 +116,7 @@ struct tda18271_pll_map tda18271_cal_pll[] = { { .lomax = 0, .pd = 0x00, .d = 0x00 }, /* end */ }; -struct tda18271_map tda18271_bp_filter[] = { +static struct tda18271_map tda18271_bp_filter[] = { { .rfmax = 62000, .val = 0x00 }, { .rfmax = 84000, .val = 0x01 }, { .rfmax = 100000, .val = 0x02 }, @@ -114,7 +127,7 @@ struct tda18271_map tda18271_bp_filter[] = { { .rfmax = 0, .val = 0x00 }, /* end */ }; -struct tda18271_map tda18271_km[] = { +static struct tda18271_map tda18271_km[] = { { .rfmax = 61100, .val = 0x74 }, { .rfmax = 350000, .val = 0x40 }, { .rfmax = 720000, .val = 0x30 }, @@ -122,7 +135,7 @@ struct tda18271_map tda18271_km[] = { { .rfmax = 0, .val = 0x00 }, /* end */ }; -struct tda18271_map tda18271_rf_band[] = { +static struct tda18271_map tda18271_rf_band[] = { { .rfmax = 47900, .val = 0x00 }, { .rfmax = 61100, .val = 0x01 }, /* { .rfmax = 152600, .val = 0x02 }, */ @@ -134,7 +147,7 @@ struct tda18271_map tda18271_rf_band[] = { { .rfmax = 0, .val = 0x00 }, /* end */ }; -struct tda18271_map tda18271_gain_taper[] = { +static struct tda18271_map tda18271_gain_taper[] = { { .rfmax = 45400, .val = 0x1f }, { .rfmax = 45800, .val = 0x1e }, { .rfmax = 46200, .val = 0x1d }, @@ -223,7 +236,7 @@ struct tda18271_map tda18271_gain_taper[] = { { .rfmax = 0, .val = 0x00 }, /* end */ }; -struct tda18271_map tda18271_rf_cal[] = { +static struct tda18271_map tda18271_rf_cal[] = { { .rfmax = 41000, .val = 0x1e }, { .rfmax = 43000, .val = 0x30 }, { .rfmax = 45000, .val = 0x43 }, @@ -244,7 +257,7 @@ struct tda18271_map tda18271_rf_cal[] = { { .rfmax = 0, .val = 0x00 }, /* end */ }; -struct tda18271_map tda18271_ir_measure[] = { +static struct tda18271_map tda18271_ir_measure[] = { { .rfmax = 30000, .val = 4}, { .rfmax = 200000, .val = 5}, { .rfmax = 600000, .val = 6}, @@ -252,6 +265,83 @@ struct tda18271_map tda18271_ir_measure[] = { { .rfmax = 0, .val = 0}, /* end */ }; +/*---------------------------------------------------------------------*/ + +static void tda18271_lookup_map(struct tda18271_map *map, + u32 *freq, u8 *val) +{ + int i = 0; + while ((map[i].rfmax * 1000) < *freq) { + if (map[i + 1].rfmax == 0) + break; + i++; + } + *val = map[i].val; +} + +static void tda18271_lookup_pll_map(struct tda18271_pll_map *map, + u32 *freq, u8 *post_div, u8 *div) +{ + int i = 0; + while ((map[i].lomax * 1000) < *freq) { + if (map[i + 1].lomax == 0) + break; + i++; + } + *post_div = map[i].pd; + *div = map[i].d; +} + +/*---------------------------------------------------------------------*/ + +void tda18271_calc_cal_pll(u32 *freq, u8 *post_div, u8 *div) +{ + tda18271_lookup_pll_map(tda18271_cal_pll, freq, post_div, div); + dbg_map("post div = 0x%02x, div = 0x%02x\n", *post_div, *div); +} + +void tda18271_calc_main_pll(u32 *freq, u8 *post_div, u8 *div) +{ + tda18271_lookup_pll_map(tda18271_main_pll, freq, post_div, div); + dbg_map("post div = 0x%02x, div = 0x%02x\n", *post_div, *div); +} + +void tda18271_calc_bp_filter(u32 *freq, u8 *val) +{ + tda18271_lookup_map(tda18271_bp_filter, freq, val); + dbg_map("0x%02x\n", *val); +} + +void tda18271_calc_km(u32 *freq, u8 *val) +{ + tda18271_lookup_map(tda18271_km, freq, val); + dbg_map("0x%02x\n", *val); +} + +void tda18271_calc_rf_band(u32 *freq, u8 *val) +{ + tda18271_lookup_map(tda18271_rf_band, freq, val); + dbg_map("0x%02x\n", *val); +} + +void tda18271_calc_gain_taper(u32 *freq, u8 *val) +{ + tda18271_lookup_map(tda18271_gain_taper, freq, val); + dbg_map("0x%02x\n", *val); +} + +void tda18271_calc_rf_cal(u32 *freq, u8 *val) +{ + tda18271_lookup_map(tda18271_rf_cal, freq, val); + dbg_map("0x%02x\n", *val); +} + +void tda18271_calc_ir_measure(u32 *freq, u8 *val) +{ + tda18271_lookup_map(tda18271_ir_measure, freq, val); + dbg_map("0x%02x\n", *val); +} + /* * Overrides for Emacs so that we follow Linus's tabbing style. * --------------------------------------------------------------------------- -- 2.39.5